Prestressed sleeper preparation concrete density non-uniformity preventing vibration device and process

Abstract

The present application relates to the technical fields of sleeper preparation, in particular to a vibrating device and process for preventing uneven concrete density in the preparation of prestressed sleepers, comprising a mold, further comprising: a moving guide mechanism arranged at the bottom of the mold, the mold being capable of moving along the production line through the moving guide mechanism; an attached vibrator fixedly installed at the bottom of the mold; an assembly plate movably arranged above the mold and capable of being driven to ascend and descend and translate by a power mechanism arranged at the side of the mold; a vibrating plate connected to the assembly plate through a plurality of telescopic mechanisms, the telescopic mechanisms being capable of cooperating with the mold through a plurality of transmission mechanisms; on the basis of vibrating the concrete by the attached vibrator, the vibrating plate is arranged, after the attached vibrator is turned on, the vibrating plate and the mold are capable of reciprocating synchronously but in different directions, so that the particles inside the concrete are more fully disturbed and rearranged, and the bubbles are more easily escaped, thereby significantly improving the uniformity of the density of the concrete.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sleeper preparation, in particular to a vibration device for preventing uneven concrete density in the preparation of prestressed sleepers and a process. BACKGROUND

[0002] Prestressed sleepers are an important railway component that uses prestressing technology to improve the load-bearing capacity and durability of concrete sleepers. They are mainly made of high-strength steel and concrete, and have characteristics such as high load-bearing capacity, durability, stability, and adaptability. During preparation, the purpose of vibration is to make the concrete dense, improve its strength and durability, and ensure the quality and stability of the structure, so it is a key step in sleeper preparation.

[0003] In today's concrete structure construction field, vibration is a key technology to ensure the density and overall quality of concrete. The means is mostly to install an attached vibrator on the surface of the mold. When the vibrator is started, the eccentric block inside the vibrator will rotate at high speed, generating a corresponding centrifugal force, and the formwork will vibrate regularly in the up-down direction by this force. Then, this vibration will be transmitted from the formwork to the concrete, causing the solid particles inside the concrete to be rearranged and combined under the influence of vibration, thereby achieving the densification effect of the concrete. However, this traditional vibration method has certain limitations, as the vibration mode is relatively simple and similar to simple harmonic vibration, resulting in rapid attenuation of vibration energy after transmission to the interior of the concrete, making it difficult to fully expel the air bubbles in the concrete, thereby affecting the density and quality of the concrete.

[0004] In actual construction process, in order to further improve the vibration effect, some vibration devices not only install attached vibrators on the surface of the mold, but also add vibration rods inside the mold. However, due to the fact that the interior of the concrete structure is usually equipped with a steel reinforcement framework, this brings many inconveniences to the operation of the vibration rod. If the vibration rod collides with or comes into contact with the steel reinforcement framework during operation, the vibration energy generated by the vibration rod is likely to be absorbed by the steel reinforcement framework. This not only causes the vibration effect of the vibration rod to be greatly reduced, making it ineffective on the concrete, but also negatively affects the stability of the steel reinforcement framework. Specifically, the vibration of the vibration rod may cause the binding wires of the steel reinforcement framework to loosen, thereby damaging the integrity of the steel reinforcement framework and reducing its reinforcing effect on the concrete. More seriously, for prestressed concrete structures, this vibration interference may weaken the bonding force and anchoring effect between the prestressed steel and the concrete, thereby affecting the long-term stability and load-bearing capacity of the structure.

[0005] Therefore, in order to ensure the vibrating effect and the structure quality, the operation position of the vibrating rod must be strictly controlled to avoid direct contact with the steel reinforcement framework. However, for some complex design and dense steel reinforcement concrete structures, the operable space of the vibrating rod is extremely limited, and it is difficult to achieve full vibration of the concrete without contacting the steel reinforcement framework. This not only brings great difficulty to the construction operation, but also easily leads to the problem of uneven concrete density, thereby affecting the quality and performance of the entire structure. In terms of construction quality control, uneven concrete density may cause a series of problems such as local strength deficiency, crack generation and durability reduction, which poses a potential threat to the safety and service life of the engineering structure. SUMMARY

[0006] The purpose of the present application is to provide a vibrating device and process for preventing uneven concrete density for prestressed sleeper preparation, to solve the problems raised in the above background.

[0007] To achieve the above-mentioned purpose, the present application provides the following technical solution: a vibrating device for preventing uneven concrete density for prestressed sleeper preparation, comprising a mold, further comprising: a moving guide mechanism arranged at the bottom of the mold, the mold being capable of moving along the production line through the moving guide mechanism; an attached vibrator fixedly installed at the bottom of the mold; an assembly plate movably arranged above the mold and capable of being driven to rise and fall and translate by a power mechanism arranged at the side of the mold; a vibrating plate connected to the assembly plate through a plurality of extension mechanisms, the extension mechanisms being capable of cooperating with the mold through a plurality of transmission mechanisms, when the attached vibrator is turned on, the mold promotes the vibrating plate to reciprocate within the mold through the transmission mechanisms, and the vibrating plate moves in the opposite direction to the mold.

[0008] As a further scheme of the present application: the extension mechanism comprises a guide cylinder fixed to the assembly plate and a telescopic rod slidingly fitted with the guide cylinder, one end of the telescopic rod is connected with an elastic member arranged in the guide cylinder, and the other end is fixed with the vibrating plate.

[0009] As a further scheme of the present application: the elastic member comprises a spring arranged in the interior of the guide cylinder, the spring is sleeved on the outer periphery of the telescopic rod, and the end of the telescopic rod away from the vibrating plate is fixed with a circular truncated cone slidingly fitted with the inner wall of the guide cylinder, and the two ends of the spring are respectively connected with the inner wall of the guide cylinder and the circular truncated cone.

[0010] As a further scheme of the present application: the transmission mechanism comprises a guide piece fixed to the side of the assembly plate and a transmission rod piece slidingly connected with the guide piece, the transmission rod piece is capable of moving along the length direction of the assembly plate, a connecting arm is fixedly connected between two adjacent telescopic rods, and a second pulley is arranged on the connecting arm.

[0011] As a further scheme of the present application: the transmission rod is provided with a first inclined surface at one end close to the second pulley, and the first inclined surface can promote the telescopic rod to slide towards the outside of the guide cylinder through the second pulley when the transmission rod moves towards the center of the assembly plate.

[0012] As a further scheme of the present application: the transmission rod is provided with a second inclined surface at one end away from the second pulley, and the first inclined surface and the second inclined surface are symmetrically arranged, the first pulley is mounted on the side of the mold, and the first pulley is in abutment with the second inclined surface before the attached vibrator is turned on after the vibrating plate enters the mold.

[0013] As a further scheme of the present application: the power mechanism comprises two groups of height adjustment structures symmetrically arranged and a translation structure respectively connected with the two groups of height adjustment structures, and the assembly plate is connected with the translation structure and can be driven by the translation structure to move along the width direction of the mold.

[0014] As a further scheme of the present application: the height adjustment structure comprises a vertical arm and a sleeve plate slidingly sleeved on the vertical arm, the sleeve plate is connected with the translation structure, and a hydraulic cylinder is further fixed on the side of the vertical arm, and the movable end of the hydraulic cylinder is fixedly connected with the sleeve plate.

[0015] As a further scheme of the present application: the translation structure comprises a horizontal arm fixedly mounted on the sleeve plate and perpendicular to the vertical arm, and a sliding seat slidingly connected with the horizontal arm, and the sliding seat is fixed with the assembly plate, and a pneumatic cylinder is further hinged on the sleeve plate, and the movable end of the pneumatic cylinder is hinged with the sliding seat.

[0016] The prestressed sleeper preparation vibration process adopts the vibration device, and comprises the following steps:

[0017] Step one: the moving guide mechanism transports the mold to the vibration station;

[0018] Step two: the power mechanism works to drive the vibrating plate to first move above the mold and then move downwards into the mold;

[0019] Step three: the attached vibrator is turned on, the mold is vibrated, and the vibrating plate is vibrated in the mold through the conduction mechanism, and the vibrating plate is synchronous with the mold in vibration but opposite in direction;

[0020] Step four: the vibration is terminated, the power mechanism drives the vibrating plate to separate from the mold and then to move to the side of the mold;

[0021] Step five, clean the vibrating plate, move the guide mechanism to transport the mold to the next station.

[0022] Compared with the prior art, the beneficial effects of the present application are: on the basis of the original attached vibrator for vibrating the concrete, the vibrating plate is provided, after the attached vibrator is turned on, the vibrating plate and the mold can perform synchronous reciprocating motion, and the motion directions of the two are opposite, therefore, by setting the vibrating plate, the single simple harmonic vibration provided by the attached vibrator is coordinated, the internal particles of the concrete can be disturbed and rearranged more fully under the multi-directional and multi-frequency harmonic vibration, the bubbles are more easily escaped, thereby the compactness uniformity of the concrete is significantly improved, the harmonic vibration is generated by the coordinated motion of the mold and the vibrating plate, the direct contact between the vibrating rod and the steel reinforcement framework is avoided, not only the uniformity and efficiency of the vibration are improved, but also the integrity of the steel reinforcement framework and the anchoring effect of the prestressed steel are effectively protected, thereby the quality and performance of the concrete structure are ensured, at the same time, the problem of uneven compactness caused by improper position control of the vibrating rod is avoided, the reliability of the construction quality is improved, and the utilization rate of the original equipment is improved; secondly, the vibrating mode of the harmonic vibration is realized, compared with the simple harmonic vibration provided by the attached vibrator, the vibrating work can be completed in a shorter time, thereby the construction efficiency is improved, the production cycle is reduced, and it is especially suitable for large-scale concrete sleeper production; in addition, in the present application, the vibrating plate is adjusted to the appropriate position by the power mechanism, the first pulley abuts against the second inclined surface, the second pulley abuts against the first inclined surface, and the reciprocating vibration of the mold and the vibrating plate is realized by mechanical transmission cooperation but in different directions. This design does not need an additional vibrator to control the vibration of the vibrating plate separately, while realizing the harmonic vibration, the strict control of the working rhythm of the mold and the vibrating plate is not needed, the vibration handling operation is simplified, and the vibration efficiency and effect are ensured. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 Axonometric view of one embodiment of the vibrating device for preventing uneven concrete compactness for preparing prestressed sleepers;

[0024] Figure 2 Structure schematic view of one embodiment of the vibrating device for preventing uneven concrete compactness for preparing prestressed sleepers;

[0025] Figure 3 Structure schematic view of one embodiment of the vibrating device for preventing uneven concrete compactness for preparing prestressed sleepers from another angle;

[0026] Figure 4 Structure schematic view of one embodiment of the vibrating device for preventing uneven concrete compactness for preparing prestressed sleepers from still another angle;

[0027] Figure 5 A front view of an embodiment of a vibratory compaction device for preventing uneven concrete compaction in the preparation of prestressed railway sleepers;

[0028] Figure 6 A schematic diagram of the moving guide mechanism in one embodiment of a vibratory compaction device for preventing uneven concrete compaction in the preparation of prestressed railway sleepers;

[0029] Figure 7 An exploded view of the telescopic mechanism in one embodiment of a vibratory compaction device for preventing uneven concrete compaction in the preparation of prestressed railway sleepers;

[0030] Figure 8 A schematic diagram of the transmission mechanism in one embodiment of a vibratory compaction device for preventing uneven concrete compaction in the preparation of prestressed railway sleepers;

[0031] Figure 9 An exploded view of the power mechanism in one embodiment of a vibratory compaction device for preventing uneven concrete compaction in the preparation of prestressed railway sleepers;

[0032] Figure 10 for Figure 9 A structural diagram from another angle.

[0033] In the diagram: 1. Track; 2. Transfer base; 201. Roller; 3. Mold; 301. First pulley; 302. Connecting block; 4. Electric push rod; 5. Attached vibrator; 6. Vertical arm; 7. Sleeve plate; 8. Hydraulic cylinder; 9. Horizontal arm; 10. Sliding seat; 11. Cylinder; 12. Assembly plate; 1201. Guide component; 13. Transmission rod; 1301. First inclined surface; 1302. Second inclined surface; 14. Guide cylinder; 15. Telescopic rod; 1501. Frustum; 16. Vibrating plate; 17. Spring; 18. Connecting arm; 1801. Second pulley. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] In addition, elements in the application can be referred to as "fixed" or "set" on another element, which can be directly on another element or can also exist in the middle of the element. When an element is considered to be "connected" to another element, it can be directly connected to another element or can also exist in the middle of the element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for illustrative purposes and do not represent the only implementation.

[0036] Please refer to Figures 1-10 In the embodiment of the application, the prestressed sleeper preparation concrete density uniformity preventing vibrating device comprises a mold 3, a moving guide mechanism arranged at the bottom of the mold 3, the mold 3 being capable of moving along the production line through the moving guide mechanism, an attached vibrator 5 fixedly installed at the bottom of the mold 3, an assembly plate 12 movably arranged above the mold 3 and capable of being driven to ascend and descend and translate by a power mechanism arranged at the side of the mold 3, and a vibrating plate 16 connected to the assembly plate 12 through a plurality of telescopic mechanisms, the telescopic mechanisms being capable of cooperating with the mold 3 through a plurality of transmission mechanisms, when the attached vibrator 5 is turned on, the up-and-down movement of the mold 3 promotes the reciprocating movement of the vibrating plate 16 in the mold 3 through the transmission mechanisms, and the movement direction of the vibrating plate 16 is opposite to that of the mold 3.

[0037] It should be noted that in the modern sleeper production line, the entire production process is scientifically divided into multiple key processes to ensure the quality and production efficiency of the sleepers. When preparing sleepers, the mobile guide mechanism can accurately guide the mold 3 to pass through each process in turn. First, the mold 3 will enter the cleaning stage, at which time the polishing wheel runs along the preset trajectory at the edge of the mold cavity to polish the surface of the mold 3 in detail to remove the concrete debris and other impurities left after the last use, while the built-in dust collector works synchronously to timely extract the dust and debris generated during the polishing process, ensuring the cleanliness of the inside of the mold 3. Subsequently, the oiling step is entered, and the staff will uniformly spray the release agent to the inner surface of the mold 3 to form a thin and uniform isolation layer, which not only helps the subsequent demolding to proceed smoothly, but also avoids the direct adhesion of concrete to the mold 3, improving the service life of the mold 3. After completing the oiling, the mold 3 enters the steel reinforcement framework into the mold process, and the pre-processed steel reinforcement framework is accurately placed inside the mold 3 to provide a support framework for subsequent concrete pouring. Next is the concrete pouring process, in which concrete is uniformly poured into the mold 3 to fill the entire mold cavity and completely wrap the steel reinforcement framework therein. Then, the vibrating process is performed to expel the air bubbles inside the concrete through the vibrating equipment, enhancing the density of the concrete and ensuring the structural strength of the sleeper. After that, the mold 3 together with the un-solidified concrete is sent into the kiln for curing, and the accurately controlled temperature and humidity conditions in the kiln accelerate the hydration reaction of the concrete, causing its strength to gradually increase and complete the hardening process. Finally, the sleeper that has been fully cured is taken out of the kiln together with the mold 3, and the demolding operation is performed to remove the formed sleeper from the mold 3. After demolding, the sleeper needs to be measured, i.e., the key dimensions such as the appearance size, reserved hole diameter, and distance between the rail groove feet of the sleeper are accurately measured to ensure that it meets the design requirements, and the surface of the sleeper is checked for cracks, defects, etc. to ensure the appearance quality and structural performance of the sleeper.

[0038] Specifically, the mobile guide mechanism includes two parallelly arranged tracks 1 and a transfer base 2 for supporting the mold 3, the bottom of the transfer base 2 is provided with a plurality of rollers 201 adapted to the tracks 1; wherein the side of the transfer base 2 is fixed with an electric push rod 4, the side of the mold 3 is fixed with a connecting block 302, and the mold 3 is provided with a through hole through which the movable end of the electric push rod 4 can pass.

[0039] Further, when the mold 3 reaches the vibrating position, the power mechanism drives the vibrating plate 16 to move until the vibrating plate 16 enters the mold 3 and the lower surface of the vibrating plate 16 is kept a certain distance from the surface of the concrete in the mold 3; then, the attached vibrator 5 (the attached vibrator 5 is a prior art application, and its specific working principle will not be described here) is started, and the mold 3 will produce a slight up-down movement with the vibration of the attached vibrator 5, which helps to transmit the vibration force to the concrete, promotes the rearrangement of bubbles and particles inside the concrete, and improves the density.

[0040] Please refer again to Figure 7 , the telescopic mechanism includes a guide cylinder 14 fixed to the assembly plate 12 and a telescopic rod 15 slidingly fitted with the guide cylinder 14, one end of the telescopic rod 15 is connected with an elastic member arranged in the guide cylinder 14, and the other end is fixed with the vibrating plate 16.

[0041] The elastic member includes a spring 17 arranged in the guide cylinder 14, the spring 17 is sleeved on the outer periphery of the telescopic rod 15, and the end of the telescopic rod 15 away from the vibrating plate 16 is fixed with a circular truncated cone 1501 slidingly fitted with the inner wall of the guide cylinder 14, and the two ends of the spring 17 are respectively connected with the inner wall of the guide cylinder 14 and the circular truncated cone 1501.

[0042] Please refer again to Figure 5 and Figure 8 , the transmission mechanism includes a guide member 1201 fixed to the side of the assembly plate 12 and a transmission rod member 13 slidingly connected with the guide member 1201, the sliding direction of the transmission rod member 13 is perpendicular to the vibration direction of the mold 3, a connecting arm 18 is fixedly connected between two adjacent telescopic rods 15, and a second pulley 1801 is arranged on the connecting arm 18; wherein, one end of the transmission rod member 13 close to the second pulley 1801 is provided with a first inclined surface 1301 abutting with the circumferential surface of the second pulley 1801, and when the transmission rod member 13 moves towards the center of the assembly plate 12, the first inclined surface 1301 can promote the telescopic rod 15 to slide towards the outside of the guide cylinder 14 through the second pulley 1801.

[0043] The end of the transmission rod member 13 away from the second pulley 1801 is provided with a second inclined surface 1302, the first inclined surface 1301 and the second inclined surface 1302 are symmetrically arranged, a first pulley 301 is installed on the side of the mold 3, and before the attached vibrator 5 is started after the vibrating plate 16 enters the mold 3, the first pulley 301 abuts with the second inclined surface 1302.

[0044] When the mold 3 reaches the vibrating station, the power mechanism works to adjust the position of the vibrating plate 16. Specifically, the power mechanism first drives the vibrating plate 16 to move to the top of the mold 3, and then drives the vibrating plate 16 to descend until the vibrating plate 16 enters the mold 3 and the lower surface of the vibrating plate 16 is at a certain distance from the surface of the concrete in the mold 3. Then, the attached vibrator 5 is turned on, and the mold 3 will make slight up-and-down movements with the vibration of the attached vibrator 5. In detail, when the mold 3 moves upward, the first pulley 301 exerts a thrust force on the second inclined surface 1302, and the transmission rod 13 slides towards the center of the assembly plate 12 under the guidance of the guide 1201, and correspondingly, the first inclined surface 1301 acts on the second pulley 1801, so that the second pulley 1801, the connecting arm 18 and the telescopic rod 15 slide towards the outside of the guide cylinder 14, and thus the vibrating plate 16 moves downward to vibrate the concrete in the mold 3. In this process, the spring 17 is compressed. Conversely, when the mold 3 moves downward, the spring 17 rebounds to make the components move reversely and reset. The first pulley 301 and the second inclined surface 1302 remain in abutment, and the second pulley 1801 and the first inclined surface 1301 remain in abutment. Therefore, on the basis of the vibration of the concrete by the attached vibrator 5, the vibrating plate 16 is provided to enable the mold 3 and the vibrating plate 16 to move synchronously and reciprocally in opposite directions. Thus, by setting the vibrating plate 16 and the simple harmonic vibration provided by the attached vibrator 5, the internal particles of the concrete can be disturbed and rearranged more fully under the harmonic vibration in multiple directions and frequencies, and the bubbles can escape more easily, thereby significantly improving the compactness and uniformity of the concrete. Secondly, the vibrating mode of the harmonic vibration is realized, which can complete the vibrating work in a shorter time compared with the simple harmonic vibration provided by the attached vibrator 5, thereby improving the construction efficiency, reducing the production cycle, and being especially suitable for large-scale concrete sleeper production. In addition, the vibrating plate 16 can shield the concrete in the mold 3 during the vibrating process, effectively preventing the concrete from splashing during the vibrating, avoiding material waste and equipment and personnel pollution, ensuring a clean working environment, and helping the concrete to maintain the complete shape in the mold 3, thereby improving the production efficiency and product quality.

[0045] It should be further noted that, in the present application, the vibrating plate 16 is adjusted to a suitable position by the power mechanism, so that the first pulley 301 is in abutment with the second inclined surface 1302, and the second pulley 1801 is in abutment with the first inclined surface 1301, and the reciprocating vibration of the mold 3 and the vibrating plate 16 is realized in synchronization but in different directions by mechanical transmission cooperation. This design does not need an additional vibrator to control the vibration of the vibrating plate 16 alone, and at the same time of realizing harmonic vibration, it does not need strict control of the working rhythm of the vibrator of the mold 3 and the vibrating plate 16, simplifies the vibration processing operation, and ensures the vibration efficiency and effect.

[0046] Please refer again to Figure 1 、 Figure 9 and Figure 10 , the power mechanism includes two groups of height adjustment structures arranged symmetrically and a translation structure respectively connected with the two groups of height adjustment structures, the assembly plate 12 is connected with the translation structure and can be driven by the translation structure to move along the width direction of the mold 3.

[0047] The height adjustment structure includes a vertical arm 6 and a sleeve plate 7 sleeved on the vertical arm 6, the sleeve plate 7 is connected with the translation structure, and the side of the vertical arm 6 is further fixed with a hydraulic cylinder 8, and the movable end of the hydraulic cylinder 8 is fixedly connected with the sleeve plate 7.

[0048] The translation structure includes a horizontal arm 9 fixedly installed on the sleeve plate 7 and perpendicular to the vertical arm 6, and a sliding seat 10 slidingly connected with the horizontal arm 9, the sliding seat 10 is fixed with the assembly plate 12, and a pneumatic cylinder 11 is hingedly connected to the sleeve plate 7, and the movable end of the pneumatic cylinder 11 is hingedly connected with the sliding seat 10.

[0049] After each vibration process is completed, the movable end of the hydraulic cylinder 8 starts to perform the elongation action. This action directly drives the sleeve plate 7 to slide along the guide of the vertical arm 6 and stably slide upward. The whole process continues until the vibrating plate 16 is completely and smoothly pulled out from the inside of the mold 3. Then, the movable end of the pneumatic cylinder 11 starts the retraction program, and the sliding seat 10 is pulled along the horizontal arm 9 and slides towards the vertical arm 6. Under this precise mechanical linkage, the vibrating plate 16 is accurately transferred from above the mold 3 to the side of the mold 3, and the position transfer task is completed.

[0050] In the actual production process, the additional cleaning step of the vibratory slab 16 after each vibration operation is particularly crucial. Specifically, after each vibration, a layer of concrete often adheres to the lower surface of the vibratory slab 16. If not cleaned in time, once the concrete dries and hardens, the effective thickness of the vibratory slab 16 will gradually increase. This change will significantly affect the accuracy and uniformity of harmonic vibration in subsequent vibration processes, thus adversely affecting the production quality of concrete sleepers. Therefore, after the vibratory slab 16 is transferred to the side of the mold 3, it is thoroughly rinsed with water, focusing on removing residual concrete from the lower surface, to ensure that it is always in optimal working condition and to provide reliable accuracy assurance for the next round of vibration operations.

[0051] It is worth noting that this cleaning step not only helps maintain the performance of the vibratory slab 16 but also extends its service life. Long-term accumulation of concrete residue can damage the structural integrity of the vibratory slab 16, while regular cleaning can effectively prevent this. Furthermore, timely cleaning of the vibratory slab 16 also helps maintain a clean production environment, reducing potential equipment malfunctions and safety hazards caused by concrete residue, thereby further improving production efficiency and safety, and ensuring the smooth production of concrete sleepers.

[0052] As another embodiment of the present invention, a vibration process for the preparation of prestressed railway sleepers is also proposed, which uses the aforementioned vibration device and includes the following steps:

[0053] Step 1: The moving guide mechanism transports the mold 3 to the vibration station;

[0054] Step two: The power mechanism works, driving the vibrating plate 16 to move above the mold 3 first, and then move down into the mold 3;

[0055] Step 3: The attached vibrator 5 is turned on, the mold 3 vibrates, and the vibrating plate 16 is driven to vibrate inside the mold 3 through the transmission mechanism. The vibration of the vibrating plate 16 is synchronized with that of the mold 3 but in opposite directions.

[0056] Step four: Vibration ends, the power mechanism drives the vibrating plate 16 to be pulled out of the mold 3 and then moved to the side of the mold 3.

[0057] Step 5: Clean the vibrating plate 16 and use the moving guide mechanism to transport the mold 3 to the next station.

[0058] It will be obvious to a person skilled in the art that the application is not limited to the details of the foregoing exemplary embodiments and can be implemented in other concrete forms without departing from the spirit or essential characteristics of the application. The embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. No reference signs in the claims should be considered as limiting the scope of the claims to the identity of the reference signs therein.

[0059] Furthermore, it should be understood that although the description is made on the basis of the embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. A vibration device for preventing concrete density unevenness in the preparation of prestressed sleepers, comprising a mold; characterized in that, Also include: A mobile guide mechanism is arranged at the bottom of the mold, and the mold can move along the production line through the mobile guide mechanism; The attached vibrator is fixedly installed at the bottom of the mold; The assembly plate is movably arranged above the mold and can be driven to rise and fall and translate by the power mechanism arranged at the side of the mold; The vibrating plate is connected to the assembly plate through a plurality of telescopic mechanisms, and the telescopic mechanisms can cooperate with the mold through a plurality of transmission mechanisms; When the attached vibrator is turned on, the mold promotes the vibrating plate to reciprocate in the mold through the transmission mechanism, and the vibrating plate moves in the opposite direction of the mold; The telescopic mechanism includes a guide cylinder fixed to the assembly plate and a telescopic rod slidably sleeved with the guide cylinder, one end of the telescopic rod is connected with an elastic element arranged in the guide cylinder, and the other end is fixed with the vibrating plate; The elastic element includes a spring arranged in the guide cylinder, the spring is sleeved on the outer periphery of the telescopic rod, and the end of the telescopic rod away from the vibrating plate is fixed with a circular truncated cone which is slidably fitted with the inner wall of the guide cylinder, and the two ends of the spring are respectively connected with the inner wall of the guide cylinder and the circular truncated cone; The transmission mechanism includes a guide piece fixed to the side of the assembly plate and a transmission rod member slidably connected with the guide piece, the transmission rod member can move along the length direction of the assembly plate, a connecting arm is fixedly connected between adjacent two telescopic rods, and a second pulley is arranged on the connecting arm.

2. The concrete uniformity preventing vibrating device for the prestressed sleeper preparation according to claim 1, characterized in that, The end of the transmission rod member close to the second pulley is provided with a first inclined surface abutting against the second pulley, and when the transmission rod member moves towards the center of the assembly plate, the first inclined surface can promote the telescopic rod to slide towards the outside of the guide cylinder through the second pulley.

3. The concrete uniformity preventing vibrating device for the prestressed sleeper manufacturing according to claim 2, wherein The end of the transmission rod member away from the second pulley is provided with a second inclined surface, the first inclined surface and the second inclined surface are symmetrically arranged, a first pulley is arranged on the side of the mold, and before the attached vibrator is turned on after the vibrating plate enters the mold, the first pulley abuts against the second inclined surface.

4. The concrete uniformity preventing vibrating device for the prestressed sleeper preparation according to claim 1, wherein The power mechanism includes two groups of height adjustment structures symmetrically arranged and a translation structure respectively connected with the two groups of height adjustment structures, the assembly plate is connected with the translation structure and can be driven to move along the width direction of the mold by the translation structure.

5. The concrete uniformity preventing vibrating device for the prestressed sleeper preparation according to claim 4, characterized in that, The height adjustment structure includes a vertical arm and a sleeve plate slidably sleeved on the vertical arm, the sleeve plate is connected with the translation structure, and the side of the vertical arm is further fixed with a hydraulic cylinder, and the movable end of the hydraulic cylinder is fixedly connected with the sleeve plate.

6. The concrete uniformity preventing vibrating device for the prestressed sleeper manufacturing according to claim 5, wherein The translation structure includes a horizontal arm fixedly installed on the sleeve plate and perpendicular to the vertical arm, and a sliding seat slidably connected with the horizontal arm, the sliding seat is fixed with the assembly plate, and a gas cylinder is hinged on the sleeve plate, and the movable end of the gas cylinder is hinged with the sliding seat.

7. A vibrating process for the production of prestressed sleepers using the vibrating device according to claim 1, characterized in that, The steps include: Step one, the mobile guide mechanism transports the mold to the vibrating station; Step two, the power mechanism works to drive the vibrating plate to first move above the mold and then move into the mold; Step three, the attached vibrator is started, the mold is vibrated, and the vibrator plate is vibrated in the mold through the conduction mechanism, and the vibrator plate is synchronized with the vibration of the mold but opposite in direction; Step four, the vibration is terminated, the power mechanism drives the vibrator plate to move away from the mold and then to the side of the mold; Step five, the vibrator plate is cleaned, and the mold is transported to the next station by the moving guide mechanism.

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